Marcus is the resident mystic and necromancer of the clan.

His knowledge of dark rituals and gods older than time are what keep the members of the clan alive as they feed on the pain and misery of their victims.

Marcus and Father have known each other for a long time, long since before they retreated to the lair beneath the island.

He was there for the primordial beginnings of this twisted family and has seen more horrific things than you can possibly imagine.

Most of them performed by him personally.